In the dark days since the insidious Red Lung virus decimated the human population, vampires have risen to rule the crumbling cities and suburbs. Uncontested Princes hold sway over diminished ranks of humans: their "pets." In exchange for their labor, loyalty and of course, their blood, these pets are registered, given food and shelter, permitted to survive.

Unregistered humans cling to fringes, scavenging for survival. Allison Sekemoto and her fellow Unregistereds are hunted, not only by vampires, but by rabids, the unholy result of Red Lung-infected vampires feeding on unwary humans. One night, Allie is attacked by a pack of rabids, saved by an unlikely hero...and turned vampire.

Uncomfortable in her undead skin, Allie falls in with a ragtag crew of humans seeking a cure, or cures: for Rabidism and for Vampirism. She's passing for human...for now. But the hunger is growing and will not be denied. Not for friendship—not even for love.

Not many people can say their entire existence has been one big lab experiment: poked and prodded by scientists, genetically modified to be the best and endure the worst, subjected to daily tests and trials that would kill a normal human. All Michaela wants is her own life, to be able to go to school, flirt with boys, maybe eat ice cream now and then. So when the chance to escape finally comes, Michaela and her sister grab it, taking their friends with them.

But they weren't the only ones to find their way out of those labs. Following close behind are another breed of creature, one that doesn't know the difference between right and wrong, who exist only to feed their own hunger. The appearance of a strange boy who seems too much like them to be a coincidence makes things even more confusing. But as the world begins to literally fall apart around them, Michaela must accept his help, especially when she could lose the very thing she holds dearest: her sister.

More than anything, Tom Raines wants to be important, though his shadowy life is anything but that. For years, Tom’s drifted from casino to casino with his unlucky gambler of a dad, gaming for their survival. Keeping a roof over their heads depends on a careful combination of skill, luck, con artistry, and staying invisible.

Then one day, Tom stops being invisible. Someone’s been watching his virtual-reality prowess, and he’s offered the incredible—a place at the Pentagonal Spire, an elite military academy. There, Tom’s instincts for combat will be put to the test, and if he passes, he’ll become a member of the Intrasolar Forces, helping to lead his country to victory in World War Three. Finally, he’ll be someone important: a superhuman war machine with the tech skills that every virtual-reality warrior dreams of. Life at the Spire holds everything that Tom’s always wanted—friends, the possibility of a girlfriend, and a life where his every action matters—but what will it cost him?